Perceptual organization via a haptic glance: haptic perception and haptically guided grasping

通过触觉扫视进行感知组织：触觉感知和触觉引导抓取

• 批准号: 9854-2007
• 负责人: Lederman, Susan
• 金额: $ 3.63万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=420866
• 关键词: Perceptual; organization; via; haptic; glance

The current proposal addresses the role of brief initial contact in perceptual organization by touch, a form of human processing never comprehensively addressed by touch scientists before. Perceptual organization is fundamental to the key question for human perception: How do we move from initial incomplete or inaccurate information derived from our sensory receptors to percepts of the world that are most often accurate, unambiguous and apparently complete? Our objectives are: i) to quantitatively assess key principles for tactually grouping and segmenting simultaneous contacts based on how the areas contacted move under the fingers when force is applied (kinetics), as well as on their geometric and/or material contact properties, and ii) to assess their consequences for tactual perception and tactually guided grasping. To initially assess the influence of perceptual organization on tactual perception and tactually guided grasping, participants will perform a series of brief contacts or "glances" using from 2 to 10 fingers to explore tabletop scenes of unfamiliar 3-D objects that vary in their kinetic, geometric, and/or material properties. Relevant perceptual and grasp responses will be required in these simple but ecologically natural experiments. In later expts, we will permit more limited but carefully controlled initial contact with 2-finger custom-designed touch displays. In Perception expts, participants will estimate the probability of perceiving 1 object, as opposed to 2. In the Grasp expts, they will do so indirectly by selecting where to position their thumb to form a stable grasp following earlier brief contact with index and middle fingers. The results will raise important questions about tactual perception and tactually guided grasping, and complement current research on perceptual organization by vision and audition scientists. They will also contribute to the quantitative assessment of extent of impaired tactual perceptual organization in stroke patients. Finally, they will improve the design of: i) telerobotic systems for touch sensing and tactually-guided grasping, ii) tangible graphics (e.g., maps, graphs) for blind users, and iii) virtual touch environments for blind and sighted users.

目前的提议解决了短暂的初始接触在触觉感知组织中的作用，这是一种人类处理的形式，以前从未被触觉科学家全面解决过。感知组织是人类感知的关键问题的基础：我们如何从最初的不完整或不准确的信息从我们的感觉受体转移到对世界的感知，通常是准确的，明确的，显然是完整的？我们的目标是：i）基于当施加力时接触的区域如何在手指下移动（动力学）以及它们的几何和/或材料接触特性，定量地评估用于触觉分组和分割同时接触的关键原理，以及ii）评估它们对触觉感知和触觉引导的抓握的后果。为了初步评估感知组织对触觉感知和触觉引导抓握的影响，参与者将使用2至10个手指进行一系列简短的接触或“扫视”，以探索不熟悉的3-D物体的桌面场景，这些物体在动力学，几何学和/或材料特性方面各不相同。在这些简单但生态自然的实验中，需要相关的感知和抓握反应。在以后的实验中，我们将允许更有限的，但仔细控制的初步接触与2手指定制设计的触摸显示器。在Perception expts中，参与者将估计感知1个物体的概率，而不是2个。在抓握实验中，他们将间接地通过选择拇指的位置来完成，以在食指和中指之前短暂接触后形成稳定的抓握。研究结果将提出关于触觉感知和触觉引导抓握的重要问题，并补充视觉和听觉科学家目前对感知组织的研究。他们也将有助于定量评估中风患者受损的触觉知觉组织的程度。最后，他们将改进以下方面的设计：i）用于触摸传感和触觉引导抓取的遥控机器人系统，ii）有形图形（例如，地图、图表），以及iii）用于盲人和有视力的用户的虚拟触摸环境。